Safety mechanism for elevators.



J. A. MILLER. SAFETY MECHANISM FOR ELEVATORS.

APPLICATION EILBD NOV.27, 1908.

Patented May 11, 1909.

2 SHEETSSHEET 1.

//lIIIIIIIIIII/(IIIIII/lIIIIIIII/Il/{Ifllll III/IIIIIIIIIIIIIII/III/fllll[III/Ill! Wihwooeo Q/// attouwg- J. A. MILLER. SAFETY MECHANISM FOR ELEVATORS. APPLICATION FILED NOV. 27.1908.

921,432, Patented May 11, 1909;.

2 SHEETS-SHEET 2.

i726 4 I 4 2 9.4 i \4/ war-Am one of the UNITED STATES PATENT, oF- IoEt JOHN A; MILLER, OF BALTIMORE, MARYLAND, ASSIGNOR TO SAFETY APPLIANCE COMPANY,

" A CORPORATION OF DELAWARE.

SAFETY MECHANISM FOR ELEVATOIQS.

Specification of Letters Patent.

atehted May 1 1, 1909.

Application filed November 27, 1908. Serial No. 464,538.

-To all whom itmay concern:

Be it known that I, JOHN A. hLlILLER,zt citizen. of the United States, residing at Baltimore, in the county of Baltimore City and State of Maryland, have invented certain new and "useful Improvements in Safety Mechanism for Elevators, of which the following is a specification.

This invention relates to safety mechanism for elevators, and has )articularly in View a mechanically operated mechanism of this character which becomes operative and effective through the opening of the elevator orlanding door, and acts in thedual capacity of a safety lock tolock the elevator against the control of the operator while the door is open, and also as a meaiis for automatically correcting creeping of the car'due to leakage in the apparatus. Inthis connection, the ini roved safety mechanism is 'of special uti ity in its application to hydraulic elevators and embodies the novel idea of providing -means for both closing and opening the main control valve of the apparatus upon-the opening of the door in order to accomplish the two functions above indicated.

A further and In'actical object of the in vention is to operate the safety mechanism in connection with a mechanical flui d pressure clutch controller. f

\"rith these and many other objects in view, which will readily appear to those familiar with the art, the invention consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

The essential features of the invention are necessarily susceptible to a wide range of structural modification, but for illustrative purposes, certain preferred practical embodim mcnts are shown in the accompanying drawings, in which:

Figure 1 is a sectional diagrammatic clevation showing a general view of a ljiydraulic elevator system equipped witha mechanically operated safetymechanism embodying the combination-of features contemplated by the present invention; the views'howing evator or landingdoors open, and hence illustrating the various parts of the safety mechanism setto operative posi Fig. 2 is a detail.perspective View showing a form of operating connection for the main controlling valve of the rmotor. Fig. 3 is a sectional diagrammatic elevation showing a general view of another form of hydraulic elevator system equi ped with the present invention, and also il ustrating another form of clutch connection that maybe utilized to connect the safety mechanism with the power control shaft of the elevator motor. Fig. 4 is an enlarged detail sectional view on the line 44 of Fig. 3 illustratiiig more Fig.

parts in the several figures of the drawings.

The improved safety mechanism claimed herein may be installed with various typesof motors or lifting apparatus for elevators without material change or modification of such apparatus, so for illustrative purposes, there is shown in Fig. 1 of the drawings a general diagrammatic view of a hydraulic.

elevator system including a-well known form of horizontally arranged hydraulic motor 1 having the usual lift or cable connection 2 with the elevator car 3. The motor equipment includes as one of the'working parts thereof a power control shaft 4 having a suitplainly the form of clutch shown 7 Like references deslgnate corresponding 8f) able operating connection with the usual I 1 and 2 is illustrated as consisting of a rocker shaft 5 carrying a valve operating arm 6 connccted with the stem 7 of the valve, said shaft 5 also carrying an oscillating cross arm 8 having terminal link connections 9 with a similar cross arm 10 on the power control shaft 4, thus providing anarrangcment wherein the rocker shaft 5 acts in synchronism witiithe power control shaft 4 and responds to'and follows the exact movements of thelat ter.

The power control shaft 4 of the; motor equipment. is fitted with the usual turning element 11 consisting of a wheel or equivalent member which is engaged by the cable if 1 operative-1y associated with the operators controlling element 13 'inthe elevator car, said cable constituting a part of said operators controlling element which is ma ipulated by the operator in the car to turning the power control shaft 4 inleither direction,according to the'direction of travel. 5 .110

intended for the car in the ele'vator'shaft.- v

for:

having a power control member which pro-- vides for cutting off and controlling the power for the motor. struction shown, it is the purpose of the present invention to combine with such construction an auxiliary mechanism, herein termed the safety mechanism, and which, in

turn, is controlled from the car or other'movingpart of the a paratus whose movement corresponds to tie motion of the'car, and also controlled by the opening and closing of the doors or gates 14 of the door openings of the elevator shaft. In this connection, it is to be understood that in using the term elevator door herein, the same is intended to include any door either oil or on the car which is utilized to cover and uncover'the door openings at the landings or utilized to rotect such door openings, and it is also to e understood that the term moving part of the apparatus as above referred to, and as occurring in the claims, is separate and distinct from and does not include the elevator doors.

Referring particularly to the improved safety mechanism, the same essentially comprises an auxiliary control shaft 15, a clutch "16 for coupling the auxiliary shaft to the power control shaft, an operating connec-- tion 17 for communicating motion to the auxiliary control shaft 15, and a safety controlling device consisting of a fluid pressure actuator 18 and a safety draw connection 19, said safety controlling device being controlled through the opening and closing of the elevator doors 14, and in turn itself control-' ling (through the fluid ressure actuator 18) the clutch 16 between t e two shaft sections 4and15. 3

The clutch 16 may be of any. construction .and type suitable for the purpose. For instance,'as shown in Figs. 1 and 2 of the drawings, this clutch may of-clutch emb od ing as principal elements thereof a 'cuppe friction disk member 20 made fast to the power control shaft 4, and a friction shoe member 21 operating Within and a ainst the disk member 20 and having a 1 8 eve element 22 rigid therewith. The sleeve element- 22 of the movable clutch member. 21

is'intended to freely slide upon the auxiliary control shaft 15, and, for that purpose, has a feathered conriectionwith sue shaft, thermore, the said shiftable or" sleeve element 22 of the clutch member 21 is designed to.

have suitably connected therewith the pivotal shift lever 23. This lever has a suitable point of pivotal support 24, and is controlled -1n its movements directly from the fluid pressure actuator 18. This actuator consists of a However, in the cone of the friction type Furhydraulic or equivalent cylinder 25, a piston 26 movable therein, and an auxiliarv actuating spring 27? inter )osed between the piston 26 and one end of t 0 cylinder. The piston rod 27 extends without the cylinder 25 and has a'pivotal connection 28 with one end of the shift level-23. The water or other operating fluid" is conducted to and exhausted from the hydraulic cylinder 25 through afluid circulating pipe 29 having a connection with one of the ports in the casing of a three-way or equivalent venting valve 30. Any kind of three-way or equivalent venting valve may be employed in this connection, but for the purposes of this case, the valve illustrated simply consists of a casing 31 having ports with which are connected the pipe 29 and fluid supply and exhaust pipes 32 and 33 re-' spectively. With these several ports cooperates the oscillating valve plug 34 having a two-way port 35 therein which is designed to respectively connect the pipes 29 and 32, and 29 and 33, according to whether the safety mechanism is in operative or inoperative condition. The stem of theyalve 34 has suitably fitted thereto a rocking weight lever 35" which is weighted at one end and has connected thereto one end of the safety draw connection 19, the other end of which safety draw connection is suitably connected to a rocking hanger lever 36 located at the top of the elevator shaft and providing for properly hangin or stringing the cable or connection 19 in p ace. To provide for permitting the necessary up and down movement for the cable or connection 19, there is also associated with the levers 35 and 36 a balancing cable 37 which is arranged on the opposite side of the pivots for the levers 35 and 36 from the said cable or connection 19.

In the embodiment of the invention suggested in Fig. 1 of the drawings, the cable or safety draw connection 19 has suitably con- 3 nected thereto, at points in the ath of movement of the elevator door '14, ell crank or equivalent release levers 38 adapted to be -engaged'by the. tappet or strike projections 39 on the elevator doors 14.

The operating connection 17 above referred to may be conveniently in the'form of an endless belt or cable 40 having a fast connection 41 with a movable part 42 of the elevator motor 1, and arran ed to pass over oppositely located belt whee s 43 and 44, the latter .of which communicates its motion to a shaft carrying a friction wheel 45 contacting with and driving a friction disk '46 carried by the auxiliary control shaft 15.

Referring to the operation of'the mechanism as illustrated in Figs. 1 and 2 of the drawings, it will be observed that when all of'the doors Mare closed, the weighted end of the lever 35 'holds the valve 34 in position for connecting the pi e. 29 with the exhaust 33, thus cutting. o the fluid pres- .sure sup'ply for the hydraulic cylinder and permitting the spring 27 of the actuator 18 to draw back the clutch member 21 out of cnga ement with the clutch member 20 so as to old the clutch 16 open, thus permittinu the usual control of the apparatus througi the operators controlling element 12 and 13. However, when a car stops at a landingand a door 14 is thrown open as shown at the top of Fig. 1 of the drawings, the tappet 39 of such door engages the release lever 38 in the path thereof with the result of rocking; said lever sons to move the safety draw connection 19 downward and cause a turning of the valve 34 to establish connnnni'ation between the pipes 32 and 29, whereupon the Water or other fluid under pressure passes into the cylinder and moves the piston 26 against the tension of the spring; 27 thereby rocking the shift lever 23 in a direction for throwing the clutch 16 into action and coupling the' shaft sections 4 and 15. Now, inasmuch as the operating connection 17 is arranged to move exactly the reverse of the movement provided for by the operators controlling element 12, 13, it is apparent that as long as a door is open,

the elevator apparatus is effectually locked against the control or manipulation of the o orator. However, in the event of the vator creeping aftei being stopped by the operator and the door being open, the creeping movement is transmitted to the connection 17, from the latter to the friction disk 46, to the auxiliary shaft 15, and through the clutch 16 to the power control shaft '4, with the result of automatically moving the main power control valve of the motor in a directionfor correcting the said creeping movement, and automatically restoring the equilibrium of the parts without regard to the leakage.

In further explanation ofthe operation of that form of the mechanism illustrated in Figs. 1 and 2'of the drawings, it maybe ob served that according to the construction shown in theseiigures of the drawings, the shaft doors 14 must be opened fully before the tappet or strike projections 39 thereonengage'the release levers 38, but it is of course understood that the inventlon comprehends either an arrangement of this ,character or one wherein the safety mechanism is set into operative condition and action immediately upon the unlatching of the shaft doors, and hence at the very moment when the operator starts the opening thereof. This is fully contemplated by the form of the invention shown in Fig. 3 of the; draw ings hereinafter more fully explained, but in further relation to the form shown in Fig. 1 .of the drawings, it is also to be understood that the shaft doors 14 are suiliciently heavv to remain stationary in their extreme fully opened positions against the pressure of the much lighter weight 35 Furthermore, in any andhll embodiments of the invention it is to be understood the. t the elevator door 14 is one of the operating elements of the mechanism, and the partscontrolling the draw connection 19 are operated from the door, that is, by the door.

'lo exemplify the ran z'c 'ofnodification that may be resorted to in carrying out the invention, there is shown in Fig". 3 of the drawings, a general view of another form of hydraulic elevator system equip ed with the improved safety mechanism. Qn this em l.=o:.liment there is illustrated ainel vato'r motor or liftin apparatus of the verlical type and the power control shaft 4 of which has the turning element 11 in the folm of the parallel, which latter arrangement is shown 'in Fifis. 8 and 4 of the drawings. In these figures of the drawings, the clutch shown comprises the shaft section 4 having a gear segment 40 which is-preferably fastened to the turning element or wheel 11 and which is adapted to mesh with ashiftable clutching gear 41 feathered on the auxiliary control shaft section 9 The shiftable clutching gear 41 is designed to have operatively connected therewith the shift lever 23 or equivillellt'Shlftlllfl means.

in Figs. 3 and 4, the operating connection for communicating); motion to the auxiliary control shaft 9 may be conveniently in the form of a sprocket chain or other form of cable 42 arranged to pass over a wheel 43 on the auxiliary shaft 9 and having: its opposite terminals as at 44 and 4-5, respectively connected to opposite parts of the car so that when the car is traveling in one direction, the cable or Furthermore, in thisv form of the invention, viz: the'one illustrated.

connection 42 is moved one way, and vice vcrsa.

A still further modification suggested in Fig. 3 of the drawings, is that of normally having the parts (when the doors are closed) in such position that the pipes 29 and 32 are in connnunication and the pressure of the fluid exerted in a direction on the piston 26 so as to hold the clutch 41 open, thereb} providingr; an arrangement wlnarein, when the valve 34 is turned by the opening of a door, the spring; 27' comes into play for closing the clutch by shifting the gear 4] into engage- 1nent with the gear 40, through the movement of the lever 2. Also,inthe form of the invention shown in Fig. 3, there is suggested the idea of associating with each door a release lever 46' having a fixed point of piv-- otal support at one end as at 4-7, and at its other end provided with a drop oil keeper 4-8, which, under normal conditions with, the .door closed, receives a bearing or contact Wheel 49 carried by the elevator door. Each release lever 46 is arranged to bear under and against a stop projection or button 50 on the cable 19 constituting the safety draw connection. Vihena door is drawn open, the wheel 49 passes out of the drop ofl' keeper -18 and rides on the straight portion of' thc lever 46, but this action is sufiicient to lift the lever with the result of drawin upward on the cable 19 and turning the va vs 3 to establish communication between the pipes 29 and 33, so that the fluid may exhaust. from the cylinder and the spring 27 come into play to close the clutch. in connection with this operation. it will be'observed that the weight for the lever 35 is reversed in position from that shown in Fig. l.

By way of illustration, two types of clutches are shown in the drawings and described herein, but it is to be understood that any form of clutch capable of performing the functions described may be utilizei'l, irrespective of whether said clutch is do signed to operate in conjunction with two shaft sections or only with a single shaft section, as it is only necessary for this part of the invention to em iloy a normally open clutch having a mom or turning with the power control shaft, and a normally idle member which is partly controlled from the elevator door, and also rotated from the ear or other moving part of the apparatus. It will also be noted in this connection that the clutch, in whatever form used, acts in the capacity of a, driving gear and consequently the present invention contemplates any form of gear connection between the two shaft sections which will'perform the functions of the clutches herein described.

I claim:

3. In. a safety mechanism for elevators, the combination with the power control shaft, of a normally open clutch having a member turning with said shaft and also having a normally idle member, means for transmitting motion to said normally idle member of the clutch from a moving part of the apparatus, and mechanical means for controlling the opening and closing of the clutch through the opening and closing of the elevator door. c

:2. In a safety mechanism for elevators, the combination with the power control shaft, of anauxiliary control shaft, a nor mally .ope'n clutch connectiombetween said two shafts, meansfortransmitting motion to the auxiliary shaft from-a moving part oi auxiliary shaft I ator having means for the apparatus, and mechanical means for controlling the opening and closing of the clutch through the opening and closing of the elevator door. 3. In a safety mechanism for elevators, the combination with the power control shaft and the operators controllingelement, of an auxiliary control shaft, a normally inoperative cl,utch connection between said two shal'l's, means for transmitting to the auxiliary .shaft a' motion reverse and in opposition to that transmitted to the power contrr'il shaft from the operators controlling element, and means for mechanically controlling the openingand closing of the clutch byrthe opening and closing of the elevator door. i

4. ln a safetyunechanism for elevators, the combination with the powercontrol shaft andthe operator's controlling element, of an auxiliary control shaft, a normally inoperative clutch connection between said two shafts, means for transmitting to the a motion reverse to that transmitted to the power control shaft from the operatons controlling element, and a door controlled actuator having means for mechanically controlling the opening and closing of the clutch through the opening and closing of the elevator door.

5. lo a safety mechanism for-elevators,

the combination with the power control shaft, of a'normally open clutch having a member turning with said shaft and also having a normally idle member, means for transmitting motion to said normally idle member ol the clutch from moving part of the apparatus, and a door controlled setumech'anically controlling the opening and closing of the clutch through the opening and closing of the ele vator door.

6. In a safety mechanism the combination with the power control clement, of a normallv open clutchhaving one member connected with said power control element and also having anormally idle member, means for transmitting motion to said normally idle member of the clutch from a moving part of the apparatus, and a mechanical actuator for said clutch having means for controlling the o )ening and clos ing of the clutch from the elevator door.

7.".ln a safety mechanism for elevat rs, the combination with the power control element, of a normally open clutch having one member connected with said power control element and also having a normally idle member, means ior transmitting motion to the normally idle clutch member from a moving part of the apparatus, and a fluid pressure actuator for opening and closing said clutch. I

8. In a safety mechanism for elevators, the combination with the power control element,

for elevators,-

of a'shaft-tur ning clutch having one member connected with the power control element,

means for transmitting motion to theother j clute'hmember from a moving part of the apcombination with the power control element,

of a shaft-turning clutch having one member connected with the power control element, means for transmitting motion to the other clutch member from moving a part of the apparatus, and a door controlled fluid ressure actuator for opening and closing sai clutch. 10. In a safety mechanism for elevators, the combination with the power control element, of a shaft-turning clutch having one member connected with the pow r control element, means for transmitting motion to the other clutch member from a moving part of the apparatus,.and a safety controlling device consisting of a lluid pressure actuator and a safety connection 0 )eratively related to the said actuator" and to the elevator doors, said safety contiollin device comprising means for opening and closing the cl ulirlln 11. In a sale'tymecnanism for elevators, the combination with the car, the shaft, the doors and power control element, of a mechanism includinga clutch for locking and actuatingsaid, element, and mecl'ianical nnans for setting said mechanism into operative condition from any door w.ith the elevator car at any point within the shaft.

' 12. In a safety mechanism for elevators, the combination with the elevator doors, the power. control clcn'ient and the controlling element, of a mechanism, independent of the operator's cont! ollingclement, and including a clutch for loclzingnnd actuating said power control element; and mechanical means for controlling said mechanism from the elevator doors. V

13. The combination with the elevator motor, its operating mechanism, the car, the operators controlling element, and a door; of means i11('.i\! (lll1g a clutch independent of the operatofls controlling element lor locking said motor operating mechanism against 1 manipulation by the operator and for operating the said motor operating mcclmnism for both stopping and starting, and mechanical means actuated by the said door for operat ing said first-mentioned means;

14. in a safety mechanism for elevators, the combination with. the power control element, and the operators controlling element, of a mechanism independent of said operators controlling clen'ient and com n'ising means for locking the. power control e ement against the control of the operator, and for actuating the same for both stopping and starting, and tttlfifir'cflllhlUllOll llun pressure opera-tons actuator for controlling said mechanism from the elevator doors.

15. In a safety mechanism for elevators, the combination with the elevator doors, the motor, the power control element, and the operators controllin element, of a safety mechanism independent of said operators controlling element and comprising mechanreal means for automatically operating said power control element to both stop the'm'otor and permit the starting thereot upon the opening of an elevator door.

16. 111 a safety mechanism for elevators,

the combination with the elevator doors, the motor, the power control means therefor, and the operators controlling element; of a safety mechanism independent of said operators controlling element and com rising mechanical means for automatical y locking said )ower control means against manipulation by the operator, and also for automatically operating said power control means to both stop the motor and permit the starting thereof upon the opening ofan elevator door.

17. In a safety mechanism for elevators, the combination with the power control element, of a mechanism includin a clutch for locking said element against t e control of the operator: and for turning the same, a

.lluid pressure actuator for throwing said mechanism in and out of action, and a door controlled device for controlling the opera.

tion of said actuator.

18. In a sa ety mechanism for elevators,

the combination with the power control element, of a clutch having one member connected with the power control element, means for transmitting motion to the other clutch member from a moving part of the apparatus, and a safety controlling device consisting of a fluid pressure actuator comprising a hydraulic cylinder, a piston in the cylinder operatively connected with the shiftable clutch member and a spring arran ed at one side of the piston, a venting va ve, a I

lluid circulating pipe connection between said valve and the cylinder, and a safety draw wnnection opcratively related to said valve and to the elevator doors.

H). In a safety mechanism for elevators, the combination with the power control element, of a clutch having one member connected with the power control element, means for transmitting motion to the other clutch member from a moving part of the apparatus, a Hold pressure actuator com-' prising aoylinder, a piston, and a s ring arranged to move the piston in one irectlon, said piston being operatively connected with the shiftablc clutch member, a venting valve, a fluid circulating pipe connection between said valve and the cylinder, a weighted safety draw connection operatively eon nected with the valve for turning the same shaft door, mechanism for operatin .starting by the opening of said door.

in both directions,a contact element carried by each elevator door, and a swinging release lever associated with each door, each release lever having a pivotal support at one end. and a drop off keeper at its opposite end.

20. In a safety mechanism for elevators, the combination with the elevator car, a the car, and a controlling mechanism inc uding a gear; an auxiliary shaft, a gear carriedby the auxiliary shaft and movable into and out of mesh with said other gear, means for transmitting motion to the auxiliary shaft from a moving part of the apparatus, and means governed by the door tor automatically connecting and disconnecting said gears.

21. In a safety mechanism for elevators,

,the combination with the motor the power control means therefor and the operators controlling element of mechanism independ-- ent of the operators controlling element and comprising means for automatically locking said )ower control means a ainst manipulation y the operator, and also for automatically operating said power control means to both stop the motor-and ermit the starting thereof, and mechanica means operating whenthe elevator door is put in unsafe or insecure position to throw said mechanism into operation. 22. The combination with an elevator motor and its operating mechanism, the car,

the operators cable and a door, of mechanical means, independent of the operators cable, for contro ling the motor operating mechanism of said car for both stopping and 23. The combination with an elevator motor and its operating mechanism, the car, the operators cable and a door, of fluid pressure means, inde endent ol' the operators cable, for con tro ling the motor operating mechanism of said car for both stopping an starting by the opening and closing of said door."

24. In a safety mechanism for elevators, the combination with the motor and its power control. element and the operators cable, of means including a lever, independent of the opcrators cable, for locking the said power control element against manipulation by the operator, and also for operating the said )ower control element for both stopping ant starting the motor,\yieldingly-actmg means for controlling the movement of said lever in one direction, a door, and-me-' chanical means governed from said door for controlling the movement of, said lever in-the other direction. v I

25. In an elevator, the combination with the elevator car, the operators cable the motor, and its power control clemengofa mechanism com risin rmeans, independent of the operatorscab e, for operating the said power control element for both stopping and starting the motor, a door, and a l'luid pressure actuator for controlling the said mechanism by the opening and closing of said door.

26. In an elevator, the combination with the elevator car, the operator's cable the motor, and its power control element, of a mechanism comprising means, independent of the operators control cable, for operating the said ower control element for both stopping ant starting the motor, a door, and mechanical means operated from said door for controlling the said mechanism.

, 27. In an elevator, the combination with the elevator car, the operators cable, the motor, and its power control element, of mechanical means including a lever, indeendent of the operators controlling cable, or operating the said power control element for both stopping and starting the motor, a

door, and mechanical means operated from said door for controlling the movements of said lever. A

,28. In an elevator, the combination with the elevator car, the operators cable, a door, the motor and its ower control element of means including it ever independent of the operators cable, for locking the said power control element against manipulation by I the operator and for operating the said power control element for both stopping and startmg the, motor, and mechanical means oper: ated from said door for controlling themovei ments of said lever. 29. In an elevator, the combination with the motor and the power control therefor, of

a cylinder and piston therein connecting witlrthe said power control so as to lock the same against manipulation by the operator, means independent of the operators cable for operating the said power control for both 4 etc ping and starting the motor, a valve for salt cylinder, and connections between said valve and a door whereby the latter controls the operation of the valve.

30. The combination with an elevator car,

an elevator shaft and the, doors thereof, mechanism for operating the car and a con-- trollin mechanism therefoiyof a normally open 0 utch having a member operatively connected with the said controlling mechanism, and also having a normally idle member, means for transmitting motion to the normally idle memlber ot the clutch from a moving partof the apparatus,'levers adjacent to, and adapted to be operated by, said doors, a draw connection having connection with said levers so as to move upward when anyone of'said levers is actuated by the dooradjacent thereto beingput into an unsafe or insecure condition, means independem; of 'saidzlevers foroverbalancing said draw conn'ectionwhen the doors nre closed,

and means connected with the draw connection for closing the clutch.

31.. The combination with an elevator car, an elevator shaft and the doors thereof, mechanism for operating thecar and a controlling mechanism therefor, of a normally 5 open clutch having a member operatively connected v'vith the said cont-rolling mechanlsm, and also having a normally idle member, means for transmitting motion to the normally idle member of the clutch from a moving partof the apparatus, levers adjacent to, and adapted to be operated by, said shaft doors, a draw connection having connection with said levers so as to move upconnected with the said controlling mechan- I ism, and also havmg a normally idle member, means fortransmitting motion to the normally idle member of the clutch from a moving part of the apparatus, levers adjacent to, and adapted to be operated by, said shaft doors, a draw connect-ion having ,connection with thesaid levers so as to move upward when any one of said levers is actuated by the door adjacent thereto being put into an unsafe or insecure condition, means for overbalancing said draw connection when the doors are closed, and a fluid-pressure actuator connected with the draw connection for opening the clutch.

33. The combination with the elevator car, the elevator shaft and the doors thereof, the motor and its controlling mechanism, of a clutch having one member operatively con nected to the said motorcontrolling mechanism, means i'or transmitting motion to the other clutch member from a moving part of the elevator apparatus, a draw connection arranged to control the engagement and disengagement of the member of the said clutch, and means 0 crating u lion the opening and the closing 0 the said aft doors to control the movements of the said draw connection.

34. The combination with the elevator car, the elevator shaft and the doors thereof, the motor and its controlling mechanism, of

a clutch having a memberoperatively con- ]ment and disengagement of the members- I thereof, and mechanical means operatin ,upon the opening and closingofthe sai shaft doors to control the movements of the I i said lever. i

35. In a safety mechanism for elevators a plurality of doors, motor controlling means, a clutch having a member operatively con- -nected to the said controlling means, and

' for transmitting motion to the normally idle member of the clutch from a moving part of.

the apparatus, a draw connection, arranged to control the o ening and the closing of the" clutch, a plura ity of stop projections at' tached to the said draw-connection, and a with the said draw connection so as to engage said stop projectrons- I Y 36. In a safety mechanism for elevators,

the landing door, motor controlling mearis,;a clutch having a member operatively con;

and also having a normally idle member, means for transmitting motion to the said normally idle member of the clutch from a moving part of the apparatus, a yieldinglyacting device causing themembers of the I clutch to become engaged, operating when l the landing door is put into an unsafeorinsecure condition, aleveradapted to be operated by said landing door, and connections between said lever and one member of. the clutch for causing the disen agement of the said clutch members when t e landing door 37. In an elevator, the combination with doors, the motor'and its controlling mechan; ism therefor, of a clutch having one member operatively connected to the said motor con trolling mechanism and also having a normally idle member, means for transmitting motionto the normally idle member of the clutch from a moving part of the apparatus, a lever when in onepositi'o'n connected sons to be adapted tocause the disengagement of the clutch members, and means controllable from a shaft door whereby when-the said door is put into an unsafe or insecure condition the said lever will beoperated to engage the clutch members. r t

38. In a safety mechanism for elevators, the landing door, motor controlling means, a clutch havingja member operatively connected to the said controlling means, and also having a normally idle member, means for transmitting motion to the said normally idle member of the clutch from a moving part of. the apparatus, a fiicldingly-acting device for closing said clutc operating when the landing door is ut into an unsafe or insecure condition', an mechanical connection between said-landing door and the clutch for causing also having a normally idle member, means .3 plurality of door controlled levers connected 1 nected to the said motor controlling means,

is put into a safe or secure condition. 10?.-

an elevator car, the elevator shaft and its i 1c c x,

the disengagement of the members of said clutch, operating when the landing door is put into a secure or safe condition.

39. In. a safety mechanism for elevators, the landing door, motor controlling means, a clutch having a member operatively con nected with the said controlling means, and also having a normally idle member, means for transmitting motion to the said normally idle member of the clutch'i'roin a moving part of the apparatus, a yieldingly-acting device for closing said clutch, operating when the land ing door is ut into an unsafe or insecure condition, am a fluid-pressure actuatop acting upon the clutch for causing disengagement ol' the members thereof, and connections be tween said landing door and the fluid-pres.- sure actuator operating when the landing door is put'into a secure or safe condition.

40. In" an elevator, motor controlling means, a cliltch having a member operatively connected with the said motor controlling means, and also having a normally idle member, means for transmitting motion to the normally idle member of the clutch from.

same moving art of the apparatus, ayieldin gl'y-actuate mechanism operating upon one member. of the clutch to oilect the closing of the clutch, a landing door, and iositively actuated mechanism operated by the closing of the lan ding door to move said clutch mem her in the opposite direction to that in which it is moved by said yieldingly actuated mechanism,substan tially as and for the pur--- poses set forth.

il. In asalety mechanism for elevators, motor controlling means, a clutch having a member operativcly connected with the said controlling means and also having a ncrnielly idle member, means for transmitting motion to the said normally idle member of I the clutchl'rorn a moving part of the apparatus, a series oilanding doors, a series of lovers adiacent to and adapted to be operated by said. 'anding doors, and a draw connection operativ ely related to said levers and to the clutch, said levers engaging said landing doors and the draw connection, substantially as and for the purposes described.

42'. in an elevator, the'combination of the' elevator car, a series of landing doors, a series of lovers adjacent said landing doors, and

positively operated in one direction by the 0 ening oi the said landing doors, means yieldingly operating said lovers in the oppo-' site direction, a safety device for the elevator controlling means consisting of a clutch having one member operativcly connected to the" controlling means of the elevator, and the other a normally idle member, means for. transmitting motion to the normally idle member of the clutch from a moving part of the apparatus, and a draw connection connected to each of said levers and with one memberol said clutch to efleot engafleinent anddisengagement of the members thereof, substantially as and for the purposes set forth.

43. In a safety mechanism for elevators, a motor controlling means, a clutch havin one member operatively connected to the sai controlling means, and a normally idle member,

means for transmitting motion to the nor-' mally idle clutch member from a moving part of the apparatus, a pivoted lever, suitably connected 'with the normally idle clutch member, a salety'draw connection connected with the said pivoted lever, so as to kcepthe members of the clutdh disengaged, a counter-.

balance for said draw connection, a plurality of levers, connections between said levers and said draw connection, and a plurality of sliding doors engaging said levers.

44.. in an elevator, the combination of a safety device, one HIQD'IlJGl ooeratively connected to the motor controlling mechanism of said elevntor, and a normally idle member arranged so as to engage the clutch member connected to the motor controlling mechanism, yieldingl -actingmechanism for bringing the two membersol' the clutch into engagement, a landing door, a lever operated by the movements of the said landing door, and connec- 'tion. betvecn said idle member of the clutch and the lever whereby the members of the clutch will become engaged when the said door is open or put into an unsafe or insecure condition. I

45. In a safety inechanisrnjor'elevators, a

motor controlling means, aclutch having one member opcratively' connected to the said motor controllin mcans, an.d a normally idle member, mcansror transmittin motion to the normally idle clutch mom, or. from a moving part oi the apparatus, a lever connected to the normally idle clutch member, landing doors, and. mechanical means 0 er ated by the opening and closing of thelan ing doors for controlling the movements of the said lever.

l6. In a safety mechanism for elevators, a

consisting of a clutch having motor controlling means, a clutch having one member operativcly connected to the said motor controlling means, and-a normally idle member, means for communicating motion to the normally idle clutch member from a niogv'uig art of the apparatus, a lever connectedto too said normally idle clutch member, a landing door, BJM mechanical means operated by the opening and closing of the landing door for moving the lever in one direction when the landing-door is 0 on and in the other directiomvvhen the lan ing door is closed.

47. The combination with an elevator car,

an elevator shaft, and the doors thereof, mechanism for operating the ear, and a controllin mechanism therefor, of a normally open 0 utch, having one member operatively connected to the said controlling mechanism, and a normally idle member, means tor transmitting motion to the normally idle clutch member from a moving part of the apparatus, a lever adapted to move the said normally idle clutch member in and out of engagement with the clutch member con-- nected to the motor cont-rolling mechanism, yieldingly-acting means for causing the lever to move in one direction, means acting positively upon said lever to move it in the opposite direction, and mechanical means operated by the shaft door for operating the means acting positively upon the said lever.

48. The combination w th an elevator car, an elevator shaftand the doors thereof, mechanism for operating the car, and its controlling mechanism, of a normally open clutch having one member operatively connected to the said controlling mechanism and a normally idle member, means for transmitting motion to the normally idle clutch member from a mov n part of the apparatus, a spring arranged t yieldingly impel the engagement of the normally id e clutch mem-- her with the clutch member that is operatively connected to the said contiolli mechanism, and a fulcrinned lever eng said idle member of the clutch so as to move it out of engagemo'tit, and means operated by the said doors for operating the said lnl crumed lever.

49. An elevator controlling means, com.- prising a door, a car, a motor, the power control element therefor, and mechanical means, actuated by the said door, independent of the operators control device, for governing the said motor power control element by the said car.

50. The combination with an elevator car, elevator shaft, the doors thereof, the motor, the power control element therefor, of means, independent of the operators control device, normally unatl'ecl'inp; the. power control element, acting to stop the motor and shiit the said motor control element to an inoperative condition, and lock the sa me against manip ulation by the operator, connection between moving part of the apparatus and said means whereby the former aetuates the lat" ter, and mechanical means operated by the opening of the said door for rendering the said first mentioned means operative with respect to the motor control element.

51. An elevator controlling means, coon trol element therefor, and mechanical means actuated by the said door, including a clutch, for governing the said motor power control .versely to the arran prising a door, a car, a motor, the power con mcnt ol the members of the said clutch.

r 3. The combination with the elevator car, the motor, the power control element therefor, of a mechanism, normalb rmatlecting the said power control element, comprising means, independentol the o; eratoi"s control device, for locking the said power control element against manipulation. by the operator. and also tor operating the said power control element for both stopping and start- 85 in; the motor, means for operating the said mechanism lrom a moving part 01 the a ,aratus, a door, and meehanicalrm ed by the said door rendering said. me vnanism operative with respect to the motor con- 90 trol element.

54. In a safety mech; nism i'or elevators, the combination with the motor, the power control element therefor, of means, in dependent of the operators control device, to. locle 9-5 ingthe said power control element against manipulation by the operator, and al o "for operating said power control elcine for both stopping and starting the motor, yieldingly-actin; means for cmitrolling the movement oi the first mentioned means in one direct ion, means acting positively upon the said first mentioned means to move it in a direction opposite to that in which it was "lOVQtl by the said yi rlll 'lj'ilCilil"' means, and mechanical means opcr ted by e shalt door For op rating: the means acting posi-- lively upon the said first nit lioncd mil-ins.

55. in a sail-Ly mechanism 'l'or clove. the combination with the power cont shalt, of an auxiliary control shalt llll'il e; a driving wheel, a normally inc; vrati're clutch connection between said two shafts, an operating cable connected with the ela or car and arranged upon the driving wheel re- '1 ii 5 ment of the connection 01 the operatofs controlling element with the power control shalt, and means for mechanically controlling the opening and closing oi the clutch through the opening and closing 1:20 of the elevator door.

56. .In a safety mechanism ior elevatora the combination with the newer control shalt, of an auxiliary control shaft, a normally inoperative clutch connection betw said two shalt-s, means for transmitting o the auxiliary shaft a motion reverse to that I moving, the drzrw connection in one dir'cetransmitted to the power control shaft from tion. 10

the operators controlling element, a safety In testimony whereof l hereunto aflix my draw connection operatively connected with "signature in the prescnee of two witnesses. theolutch for eontrolling the opening rind Q JOHN A. MILLER, closing thereof and having stop projections, Witnesses:

and a door actuated device having a lever CALVIN (Vr. UnnsNU'r,

element engaging with a stop projection for i .lioUIsn A. )IILLER. 

